A keying slot on the header ensures the connector pair can only be mated in the correct orientation — you should hear it click home, and it can't go in wrong. The tin-plated solder tails (78.7µin) handle the wave-solder joint without wicking issues.
Through-hole termination with a 0.122" (3.10mm) post length — the solder tail protrudes enough for a reliable wave-solder fillet on standard 1.6mm PCBs. Dual-row configuration with 0.079" (2.00mm) row spacing — the board footprint occupies a 4.00mm-wide keep-out zone.
Comparing 8-Position vs 10-Position Sibling
The 90309-008LF (8 positions) and the 90309-010LF (10 positions) share identical pitch (2.00mm), row spacing, shrouding, plating thickness, and current/voltage ratings.